CN111302566A - Sulfur autotrophic short-cut denitrification desulfurization wastewater treatment method - Google Patents
Sulfur autotrophic short-cut denitrification desulfurization wastewater treatment method Download PDFInfo
- Publication number
- CN111302566A CN111302566A CN202010155316.3A CN202010155316A CN111302566A CN 111302566 A CN111302566 A CN 111302566A CN 202010155316 A CN202010155316 A CN 202010155316A CN 111302566 A CN111302566 A CN 111302566A
- Authority
- CN
- China
- Prior art keywords
- sewage
- wastewater
- denitrification
- tank
- purification tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/101—Sulfur compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/163—Nitrates
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/166—Nitrites
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2806—Anaerobic processes using solid supports for microorganisms
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F7/00—Aeration of stretches of water
Abstract
The invention discloses a sulfur autotrophic short-cut denitrification desulfurization wastewater treatment method, which comprises the following steps: the wet desulphurization wastewater to be treated is precipitated, the upper layer wastewater of the first-stage wastewater purification tank is sent into the second-stage wastewater purification tank, the desulfurization wastewater from which suspended matters are removed in the step S2 is uniformly mixed with the ammonia nitrogen wastewater discharged in the industry by aerating the wastewater in the second-stage wastewater purification tank through an air pump, and the wet desulphurization wastewater treatment method has the following beneficial effects: the method can fully utilize the carbon source in the desulfurization and denitrification wastewater after the denitrification and wet desulfurization treatment, can degrade nitrogen and sulfur pollutants in the two types of wastewater simultaneously, has high efficiency, low energy consumption, simple process, no secondary pollution, high environmental benefit and economic benefit, can directly utilize the electron donor transferred from the inner side of the membrane to react with nitrate nitrogen in the wastewater at the outer side of the membrane by attaching the denitrifying bacteria to the gas permeable membrane, and solves the problems of low solubility and low reaction utilization rate of gas electron donors such as methane and the like in water.
Description
Technical Field
The invention discloses a sulfur autotrophic short-cut denitrification desulfurization wastewater treatment method, and belongs to the technical field of wastewater treatment.
Background
Coal-fired boilers are used in most industrial production in China, a large amount of flue gas containing sulfur dioxide and nitrogen oxides is required to be subjected to desulfurization, denitrification and purification, and according to data of 2015 national environmental statistics bulletin, the total emission amount of industrial SO2 in China is up to 1556.7 ten thousand tons, and the total emission amount of nitrogen oxides in China is up to 1180.9 thousand tons. Along with the implementation of a series of relevant environmental protection regulation standards such as air pollution prevention action plan (ten air regulations for short) in China, new air pollutant emission standard (GB13223-2011) in thermal power plants, special emission limit value and environmental air quality standard (GB3095-2012), the construction of flue gas desulfurization and denitration facilities is gradually improved, and the subsequent desulfurization and denitration wastewater containing nitrate and sulfate is also discharged in large quantity, so that secondary pollution is easily caused.
The denitrifying biofilter belongs to a biofilm process sewage treatment technology, quickly and effectively forms a film on the surface of a filter material, and starts the denitrifying biofilter to ensure the removal efficiency of pollutants, and is a key factor and a limiting step of the operation of the denitrifying biofilter. Generally speaking, the start-up phase biofilm formation mode of the denitrification biological filter tank comprises a stuffy aeration method, a closed circulation method and the like, but the existing running nitrification and denitrification process usually passes through denitrification reaction of a reaction tank, and the running process has high energy consumption, low removal rate and unsatisfactory running effect.
Disclosure of Invention
The invention aims to solve the defects and provide a sulfur autotrophic short-cut denitrification desulfurization wastewater treatment method.
A sulfur autotrophic short-cut denitrification desulfurization wastewater treatment method comprises the following steps:
s1, carrying out precipitation treatment on the wet desulphurization wastewater to be treated, cleaning the sediment at the bottom of the precipitation tank, recycling the upper-layer sewage of the precipitation tank, sending the upper-layer sewage to a primary sewage purification tank, adjusting the pH value of the primary sewage purification tank to 7-8, stirring for 30-50 min, adding a porous adsorbent while stirring, carrying out precipitation, and cleaning the sediment at the bottom of the primary sewage purification tank.
S2, feeding the upper layer sewage of the primary sewage purification tank into a secondary sewage purification tank, aerating in the secondary sewage purification tank by an air pump, adding an oxidant, a coagulant aid and a flocculant while aerating, standing for 8-12 hours, and finally cleaning sediment at the bottom of the secondary sewage purification tank to remove surface suspended matters;
s3, uniformly mixing the desulfurization wastewater from which the suspended matters are removed in the step S2 with industrial ammonia nitrogen wastewater, wherein the mixing time is 30-50 min;
s4, preparing a denitrification tank, wherein a gas permeable membrane, a modified gel biochar filler filled around the gas permeable membrane and a slow-release thiobacillus filler are arranged in the middle of the denitrification tank;
s5, introducing the sewage into a sewage denitrification tank, wherein the sewage contains denitrifying bacteria capable of carrying out denitrification reaction, and the denitrifying bacteria enter a sewage denitrification device and then are attached to the outer side surface of the gas permeable membrane;
s6, introducing gaseous organic matters which can be used as electron donors for denitrification reaction into the inner side of the gas permeable membrane;
s8, denitrifying bacteria attached to the outer surface of the gas permeable membrane perform denitrification reaction by using nitrate nitrogen and gaseous organic matters on two sides of an interface, reduce the nitrate nitrogen in the sewage into nitrogen, simultaneously disperse part of the gaseous organic matters into the sewage through the gas permeable membrane, enter the microporous structure of the modified gel biochar filler, attach part of the denitrifying bacteria to the modified gel biochar filler, and perform denitrification reaction by using nearby gaseous organic matters and the nitrate nitrogen to reduce the nitrate nitrogen in the sewage into nitrogen;
s9, introducing the sewage of the step S8 into a sludge anaerobic biological reaction tank containing sulfate type anaerobic ammonium oxidation bacteria and nitrite reduction anaerobic ammonium oxidation bacteria, carrying out solid-liquid separation on the sewage, and recovering elemental sulfur.
Preferably, the preparation steps of the modified gel biochar filler are as follows:
(1) preparing charcoal powder: the method comprises the following steps of taking a plurality of combinations of corn stalks, cotton hulls, millet bran, straws and rice hulls as raw materials, pyrolyzing the raw materials for 1-6 hours at 300-800 ℃, deashing the obtained charcoal, and then performing ball milling treatment to obtain charcoal powder with the particle size of below 400-1000 meshes;
(2) soaking charcoal powder in gel suspension of carrageenan or sodium alginate, and mixing the charcoal powder and the gel suspension by ultrasonic treatment;
(3) and drying the obtained precipitate to obtain the modified gel biochar filler with the diameter of 30-70 mm.
Preferably, the concentration of the sulfate in the desulfurization wastewater after the step S3 is 30-1100 mg/L, and the concentration of the nitrate is 80-1200 mg/L.
Preferably, the COD concentration in the step S3 is 30-1300 mg/L.
Preferably, the hydraulic retention time of the wastewater introduced into the anaerobic biological reaction tank in the step S9 is 5-10 hours, the pH value is 7-8, and the temperature is 30-55 ℃.
Preferably, in step S9, the concentration of the sulfate type anammox bacteria is 20% to 50%, and the concentration of the nitrite reducing anammox bacteria is 20% to 50%.
Preferably, the slow-release thiobacillus filler in step S4 is an inorganic chemoautotrophic thiobacillus.
Compared with the prior art, the invention has the following beneficial effects:
the method can fully utilize the carbon source in the desulfurization and denitrification wastewater after the denitrification and wet desulfurization treatment, can degrade nitrogen and sulfur pollutants in the two types of wastewater simultaneously, has high efficiency, low energy consumption, simple process, no secondary pollution, high environmental benefit and economic benefit, can directly utilize the electron donor transferred from the inner side of the membrane to react with nitrate nitrogen in the wastewater at the outer side of the membrane by attaching the denitrifying bacteria to the gas permeable membrane, and solves the problems of low solubility and low reaction utilization rate of gas electron donors such as methane and the like in water.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
S1, performing precipitation treatment on the wet desulphurization wastewater to be treated, cleaning the sediment at the bottom of the precipitation tank, recovering the upper-layer sewage of the precipitation tank, sending the upper-layer sewage to the primary sewage purification tank, adjusting the pH value of the primary sewage purification tank to 7, stirring for 30min, adding a porous adsorbent while stirring, performing precipitation, and cleaning the sediment at the bottom of the primary sewage purification tank.
S2, feeding the upper layer sewage of the primary sewage purification tank into a secondary sewage purification tank, aerating in the secondary sewage purification tank by an air pump, adding an oxidant, a coagulant aid and a flocculant while aerating, standing for 8 hours, and finally cleaning sediment at the bottom of the secondary sewage purification tank to remove surface suspended matters;
s3, uniformly mixing the desulfurization wastewater from which the suspended matters are removed in the step S2 with industrial ammonia nitrogen wastewater, wherein the mixing time is 30min, and the sulfate concentration, the nitrate concentration and the COD concentration in the desulfurization wastewater are respectively controlled to be 200mg/L, 200mg/L and 200 g/L;
s4, preparing a denitrification tank, wherein a gas permeable membrane, a modified gel biochar filler filled around the gas permeable membrane and a slow-release thiobacillus filler are arranged in the middle of the denitrification tank;
s5, introducing the sewage into a sewage denitrification tank, wherein the sewage contains denitrifying bacteria capable of carrying out denitrification reaction, and the denitrifying bacteria enter a sewage denitrification device and then are attached to the outer side surface of the gas permeable membrane;
s6, introducing gaseous organic matters which can be used as electron donors for denitrification reaction into the inner side of the gas permeable membrane;
s8, denitrifying bacteria attached to the outer surface of the gas permeable membrane perform denitrification reaction by using nitrate nitrogen and gaseous organic matters on two sides of an interface, reduce the nitrate nitrogen in the sewage into nitrogen, simultaneously disperse part of the gaseous organic matters into the sewage through the gas permeable membrane, enter the microporous structure of the modified gel biochar filler, attach part of the denitrifying bacteria to the modified gel biochar filler, and perform denitrification reaction by using nearby gaseous organic matters and the nitrate nitrogen to reduce the nitrate nitrogen in the sewage into nitrogen;
s9, introducing the sewage obtained in the step S8 into a sludge anaerobic biological reaction tank containing 20% sulfate type anaerobic ammonium oxidation bacteria and 20% nitrite reduction anaerobic ammonium oxidation bacteria, wherein the hydraulic retention time of the wastewater introduced into the anaerobic biological reaction tank is 5h, the pH value is 7, the temperature is 30 ℃, and the wastewater is subjected to solid-liquid separation to recover elemental sulfur.
Example two
S1, performing precipitation treatment on the wet desulphurization wastewater to be treated, cleaning the sediment at the bottom of the precipitation tank, recovering the upper-layer sewage of the precipitation tank, sending the upper-layer sewage to the primary sewage purification tank, adjusting the pH value of the primary sewage purification tank to 7, stirring for 40min, adding a porous adsorbent while stirring, performing precipitation, and cleaning the sediment at the bottom of the primary sewage purification tank.
S2, feeding the upper layer sewage of the primary sewage purification tank into a secondary sewage purification tank, aerating in the secondary sewage purification tank by an air pump, adding an oxidant, a coagulant aid and a flocculant while aerating, standing for 10 hours, and finally cleaning sediment at the bottom of the secondary sewage purification tank to remove surface suspended matters;
s3, uniformly mixing the desulfurization wastewater from which the suspended matters are removed in the step S2 with industrial ammonia nitrogen wastewater, wherein the mixing time is 40min, and the sulfate concentration, the nitrate concentration and the COD concentration in the desulfurization wastewater are respectively controlled to be 600mg/L, 600mg/L and 600 g/L;
s4, preparing a denitrification tank, wherein a gas permeable membrane, a modified gel biochar filler filled around the gas permeable membrane and a slow-release thiobacillus filler are arranged in the middle of the denitrification tank;
s5, introducing the sewage into a sewage denitrification tank, wherein the sewage contains denitrifying bacteria capable of carrying out denitrification reaction, and the denitrifying bacteria enter a sewage denitrification device and then are attached to the outer side surface of the gas permeable membrane;
s6, introducing gaseous organic matters which can be used as electron donors for denitrification reaction into the inner side of the gas permeable membrane;
s8, denitrifying bacteria attached to the outer surface of the gas permeable membrane perform denitrification reaction by using nitrate nitrogen and gaseous organic matters on two sides of an interface, reduce the nitrate nitrogen in the sewage into nitrogen, simultaneously disperse part of the gaseous organic matters into the sewage through the gas permeable membrane, enter the microporous structure of the modified gel biochar filler, attach part of the denitrifying bacteria to the modified gel biochar filler, and perform denitrification reaction by using nearby gaseous organic matters and the nitrate nitrogen to reduce the nitrate nitrogen in the sewage into nitrogen;
s9, introducing the sewage obtained in the step S8 into a sludge anaerobic biological reaction tank containing 30% sulfate type anaerobic ammonium oxidation bacteria and 30% nitrite reduction anaerobic ammonium oxidation bacteria, wherein the hydraulic retention time of the wastewater introduced into the anaerobic biological reaction tank is 8h, the pH value is 8, the temperature is 45 ℃, and the wastewater is subjected to solid-liquid separation to recover elemental sulfur.
EXAMPLE III
S1, performing precipitation treatment on the wet desulphurization wastewater to be treated, cleaning the sediment at the bottom of the precipitation tank, recovering the upper-layer sewage of the precipitation tank, sending the upper-layer sewage to the primary sewage purification tank, adjusting the pH value of the primary sewage purification tank to 8, stirring for 50min, adding a porous adsorbent while stirring, performing precipitation, and cleaning the sediment at the bottom of the primary sewage purification tank.
S2, feeding the upper layer sewage of the primary sewage purification tank into a secondary sewage purification tank, aerating in the secondary sewage purification tank by an air pump, adding an oxidant, a coagulant aid and a flocculant while aerating, standing for 12 hours, and finally cleaning sediment at the bottom of the secondary sewage purification tank to remove surface suspended matters;
s3, uniformly mixing the desulfurization wastewater from which the suspended matters are removed in the step S2 with industrial ammonia nitrogen wastewater, wherein the mixing time is 50min, and the sulfate concentration, the nitrate concentration and the COD concentration in the desulfurization wastewater are respectively controlled to be 1100mg/L, 1200mg/L and 1300 g/L;
s4, preparing a denitrification tank, wherein a gas permeable membrane, a modified gel biochar filler filled around the gas permeable membrane and a slow-release thiobacillus filler are arranged in the middle of the denitrification tank;
s5, introducing the sewage into a sewage denitrification tank, wherein the sewage contains denitrifying bacteria capable of carrying out denitrification reaction, and the denitrifying bacteria enter a sewage denitrification device and then are attached to the outer side surface of the gas permeable membrane;
s6, introducing gaseous organic matters which can be used as electron donors for denitrification reaction into the inner side of the gas permeable membrane;
s8, denitrifying bacteria attached to the outer surface of the gas permeable membrane perform denitrification reaction by using nitrate nitrogen and gaseous organic matters on two sides of an interface, reduce the nitrate nitrogen in the sewage into nitrogen, simultaneously disperse part of the gaseous organic matters into the sewage through the gas permeable membrane, enter the microporous structure of the modified gel biochar filler, attach part of the denitrifying bacteria to the modified gel biochar filler, and perform denitrification reaction by using nearby gaseous organic matters and the nitrate nitrogen to reduce the nitrate nitrogen in the sewage into nitrogen;
s9, introducing the sewage obtained in the step S8 into a sludge anaerobic biological reaction tank containing 50% sulfate type anaerobic ammonium oxidation bacteria and 50% nitrite reduction anaerobic ammonium oxidation bacteria, wherein the hydraulic retention time of the wastewater introduced into the anaerobic biological reaction tank is 10h, the pH value is 8, the temperature is 55 ℃, and the wastewater is subjected to solid-liquid separation to recover elemental sulfur.
In the first, second and third embodiments, the slow-release thiobacillus filler uses thiosulfate (S2O32-), elemental sulfur (S), sulfide (S2-), and the like as electron donors in an oxygen-free or oxygen-deficient environment, reduces nitrate nitrogen (NO3-) to nitrogen (N2) by using nitrate as an electron acceptor, and simultaneously reduces sulfur to sulfate in an autotrophic denitrification process, compared with sodium thiosulfate, the slow-release thiobacillus filler has the following advantages by using an elemental sulfur bed organism: the elemental sulfur is cheap, and the filler cost is reduced; the reaction rate is high, and the effect is good; the concentration of the sulfate in the effluent is low; the process flow is relatively shortened, the operation is simple, the removal rate of 77 percent can be achieved within the concentration range of 30.4-32.6 mg/L nitrate nitrogen by taking sulfur powder as an electron donor, the removal rate of nitrate nitrogen below 50mg/L is more than 80 percent under the condition that the HRT is 1.5h, and the reaction equation by taking sulfur as an electron donor is as follows:
compared with the prior art, the invention has the following beneficial effects:
the method can fully utilize the carbon source in the desulfurization and denitrification wastewater after the denitrification and wet desulfurization treatment, can degrade nitrogen and sulfur pollutants in the two types of wastewater simultaneously, has high efficiency, low energy consumption, simple process, no secondary pollution, high environmental benefit and economic benefit, can directly utilize the electron donor transferred from the inner side of the membrane to react with nitrate nitrogen in the wastewater at the outer side of the membrane by attaching the denitrifying bacteria to the gas permeable membrane, and solves the problems of low solubility and low reaction utilization rate of gas electron donors such as methane and the like in water.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A sulfur autotrophic short-cut denitrification desulfurization wastewater treatment method is characterized by comprising the following steps: the method comprises the following steps:
s1, carrying out precipitation treatment on the wet desulphurization wastewater to be treated, cleaning the sediment at the bottom of the precipitation tank, recycling the upper-layer sewage of the precipitation tank, sending the upper-layer sewage to a primary sewage purification tank, adjusting the pH value of the primary sewage purification tank to 7-8, stirring for 30-50 min, adding a porous adsorbent while stirring, carrying out precipitation, and cleaning the sediment at the bottom of the primary sewage purification tank.
S2, feeding the upper layer sewage of the primary sewage purification tank into a secondary sewage purification tank, aerating in the secondary sewage purification tank by an air pump, adding an oxidant, a coagulant aid and a flocculant while aerating, standing for 8-12 hours, and finally cleaning sediment at the bottom of the secondary sewage purification tank to remove surface suspended matters;
s3, uniformly mixing the desulfurization wastewater from which the suspended matters are removed in the step S2 with industrial ammonia nitrogen wastewater, wherein the mixing time is 30-50 min;
s4, preparing a denitrification tank, wherein a gas permeable membrane, a modified gel biochar filler filled around the gas permeable membrane and a slow-release thiobacillus filler are arranged in the middle of the denitrification tank;
s5, introducing the sewage into a sewage denitrification tank, wherein the sewage contains denitrifying bacteria capable of carrying out denitrification reaction, and the denitrifying bacteria enter a sewage denitrification device and then are attached to the outer side surface of the gas permeable membrane;
s6, introducing gaseous organic matters which can be used as electron donors for denitrification reaction into the inner side of the gas permeable membrane;
s8, denitrifying bacteria attached to the outer surface of the gas permeable membrane perform denitrification reaction by using nitrate nitrogen and gaseous organic matters on two sides of an interface, reduce the nitrate nitrogen in the sewage into nitrogen, simultaneously disperse part of the gaseous organic matters into the sewage through the gas permeable membrane, enter the microporous structure of the modified gel biochar filler, attach part of the denitrifying bacteria to the modified gel biochar filler, and perform denitrification reaction by using nearby gaseous organic matters and the nitrate nitrogen to reduce the nitrate nitrogen in the sewage into nitrogen;
s9, introducing the sewage of the step S8 into a sludge anaerobic biological reaction tank containing sulfate type anaerobic ammonium oxidation bacteria and nitrite reduction anaerobic ammonium oxidation bacteria, carrying out solid-liquid separation on the sewage, and recovering elemental sulfur.
2. The method for treating sulfur autotrophic short-cut denitrification desulfurization wastewater according to claim 1, characterized in that: the preparation steps of the modified gel biochar filler are as follows:
(1) preparing charcoal powder: the method comprises the following steps of taking a plurality of combinations of corn stalks, cotton hulls, millet bran, straws and rice hulls as raw materials, pyrolyzing the raw materials for 1-6 hours at 300-800 ℃, deashing the obtained charcoal, and then performing ball milling treatment to obtain charcoal powder with the particle size of below 400-1000 meshes;
(2) soaking charcoal powder in gel suspension of carrageenan or sodium alginate, and mixing the charcoal powder and the gel suspension by ultrasonic treatment;
(3) and drying the obtained precipitate to obtain the modified gel biochar filler with the diameter of 30-70 mm.
3. The method for treating sulfur autotrophic short-cut denitrification desulfurization wastewater according to claim 1, characterized in that: the concentration of sulfate in the desulfurization wastewater after the step S3 is 30-1100 mg/L, and the concentration of nitrate is 80-1200 mg/L.
4. The method for treating sulfur autotrophic short-cut denitrification desulfurization wastewater according to claim 1, characterized in that: in the step S3, the COD concentration is 30-1300 mg/L.
5. The method for treating sulfur autotrophic short-cut denitrification desulfurization wastewater according to claim 1, characterized in that: and the hydraulic retention time of the wastewater introduced into the anaerobic biological reaction tank in the step S9 is 5-10 h, the pH is 7-8, and the temperature is 30-55 ℃.
6. The method for treating sulfur autotrophic short-cut denitrification desulfurization wastewater according to claim 1, characterized in that: in the step S9, the concentration of the sulfate type anaerobic ammonium oxidation bacteria is 20-50%, and the concentration of the nitrite reducing anaerobic ammonium oxidation bacteria is 20-50%.
7. The method for treating sulfur autotrophic short-cut denitrification desulfurization wastewater according to claim 1, characterized in that: the slow-release thiobacillus filler in the step S4 is inorganic chemoautotrophic thiobacillus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010155316.3A CN111302566A (en) | 2020-03-09 | 2020-03-09 | Sulfur autotrophic short-cut denitrification desulfurization wastewater treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010155316.3A CN111302566A (en) | 2020-03-09 | 2020-03-09 | Sulfur autotrophic short-cut denitrification desulfurization wastewater treatment method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111302566A true CN111302566A (en) | 2020-06-19 |
Family
ID=71156999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010155316.3A Pending CN111302566A (en) | 2020-03-09 | 2020-03-09 | Sulfur autotrophic short-cut denitrification desulfurization wastewater treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111302566A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114804351A (en) * | 2022-05-05 | 2022-07-29 | 中国电建集团中南勘测设计研究院有限公司 | Anoxic suspension carrier with mixotrophic denitrification function and preparation method thereof |
| CN116332343A (en) * | 2023-05-22 | 2023-06-27 | 江苏省环境工程技术有限公司 | Sulfur autotrophic denitrification sulfur-based magnetic filler and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108191056A (en) * | 2018-01-31 | 2018-06-22 | 郑州轻工业学院 | Method is denitrogenated in the desulfurization of a kind of desulphurization denitration waste water and ammonia nitrogen waste water |
| CN109293046A (en) * | 2018-10-12 | 2019-02-01 | 南京易洁环保科技有限公司 | A kind of purifying domestic sewage method |
| CN109761347A (en) * | 2019-02-28 | 2019-05-17 | 武汉理工大学 | Based on the denitrifying sewage plant Tailwater Depth denitrogenation method of anaerobe and device |
-
2020
- 2020-03-09 CN CN202010155316.3A patent/CN111302566A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108191056A (en) * | 2018-01-31 | 2018-06-22 | 郑州轻工业学院 | Method is denitrogenated in the desulfurization of a kind of desulphurization denitration waste water and ammonia nitrogen waste water |
| CN109293046A (en) * | 2018-10-12 | 2019-02-01 | 南京易洁环保科技有限公司 | A kind of purifying domestic sewage method |
| CN109761347A (en) * | 2019-02-28 | 2019-05-17 | 武汉理工大学 | Based on the denitrifying sewage plant Tailwater Depth denitrogenation method of anaerobe and device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114804351A (en) * | 2022-05-05 | 2022-07-29 | 中国电建集团中南勘测设计研究院有限公司 | Anoxic suspension carrier with mixotrophic denitrification function and preparation method thereof |
| CN114804351B (en) * | 2022-05-05 | 2023-11-07 | 中国电建集团中南勘测设计研究院有限公司 | Anoxic suspension carrier with concurrently-nourishing denitrification function and preparation method thereof |
| CN116332343A (en) * | 2023-05-22 | 2023-06-27 | 江苏省环境工程技术有限公司 | Sulfur autotrophic denitrification sulfur-based magnetic filler and preparation method and application thereof |
| CN116332343B (en) * | 2023-05-22 | 2023-08-18 | 江苏省环境工程技术有限公司 | Sulfur autotrophic denitrification sulfur-based magnetic filler and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101708926B (en) | Method for biologically treating wastewater by simultaneously desulfurizing, denitrifying and decoloring | |
| CN104607029B (en) | Synchronous flue gas desulfurization and denitrification process combining chemical absorption with anaerobic-aerobic conversion | |
| CN110395851B (en) | High-altitude town sewage treatment method based on nitrogen and phosphorus capture and completely autotrophic nitrogen removal | |
| CN102745868A (en) | Method for removing carbon, nitrogen and sulfur in waste water | |
| CN100357015C (en) | Biological method for simultaneously removing SO2,NOX,heavy metal and granule from gas | |
| CN108191050B (en) | Low-consumption cooperative treatment method for flue gas desulfurization wastewater and ammonia nitrogen wastewater | |
| CN108191056B (en) | Desulfurization and denitrification method for desulfurization and denitrification wastewater and ammonia nitrogen wastewater | |
| CN103937712A (en) | Bacillus licheniformis and application thereof | |
| CN111302566A (en) | Sulfur autotrophic short-cut denitrification desulfurization wastewater treatment method | |
| CN102464420B (en) | Sewage physical-chemical treatment method | |
| CN109943377B (en) | Method for synchronously purifying and enhancing sewage denitrification by using nitrite as electron acceptor | |
| CN112744912A (en) | Sulfur autotrophic denitrification biological filter, sewage treatment system and treatment method thereof | |
| CN110639349A (en) | Chemical coupling biological synchronous waste gas desulfurization, deamination and sulfur combination recycling process | |
| CN104801166A (en) | Method and device for cooperative flue gas desulfurization and sewage organic matter degradation and denitrification | |
| CN109650543B (en) | SPNA integrated denitrification method for treating low-matrix wastewater under continuous flow condition | |
| CN102464422B (en) | Method for pretreating industrial waste water | |
| CN106673370B (en) | Coking sewage treatment method | |
| CN111484129A (en) | Sulfur autotrophic denitrification filler, preparation method and application thereof | |
| CN113003888B (en) | Method for water treatment by using desulfurization ash | |
| CN205367869U (en) | A waste water denitration treatment system for oxidizing process denitration | |
| CN108383299A (en) | The preprocess method and pretreatment system of coal chemical industrial waste water | |
| CN212581728U (en) | Wastewater treatment system for sludge and blue-green algae synergistic deep dehydration | |
| CN206736032U (en) | A kind of denitrogenation of waste water processing system | |
| CN107055960B (en) | Comprehensive utilization method for combustion supporting of sewage treatment boiler | |
| KR101269379B1 (en) | Treatment method for wastewater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 7 / F, building 3, No. 1368, Wuzhong Avenue, Wuzhong Economic Development Zone, Suzhou City, Jiangsu Province Applicant after: SUZHOU ZHONGSHENG ENVIRONMENTAL REMEDIATION Co.,Ltd. Address before: 7 / F, building 3, No. 1368, Wuzhong Avenue, Wuzhong Economic Development Zone, Suzhou City, Jiangsu Province Applicant before: SUZHOU ZHONGSHENG ENVIRONMENTAL RESTORATION CO.,LTD. |
|
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200619 |